- From: Chris Lilley <chris@w3.org>
- Date: Tue, 7 Feb 2012 02:32:00 +0100
- To: "Tab Atkins Jr." <jackalmage@gmail.com>
- CC: Cyril Concolato <Cyril.Concolato@cisra.canon.com.au>, Tavmjong Bah <tavmjong@free.fr>, Erik Dahlstrom <ed@opera.com>, "public-svg-wg@w3.org" <public-svg-wg@w3.org>
On Monday, February 6, 2012, 8:08:11 AM, Tab wrote: TAJ> <g color='red' fill='currentColor'> TAJ> <rect /> TAJ> <g color='green'> TAJ> <rect /> TAJ> </g> TAJ> </g> TAJ> In this example, the <rect>s both inherit a "fill: currentColor". TAJ> Since the first has a parent with color=red, and the second has a TAJ> parent with color=green, I think you'd naively expect the first to be TAJ> filled with red and the second with green. But, because currentColor TAJ> computes to 'red', you'll instead get two red rectangles. TAJ> useColor doesn't help here, because then it simply wouldn't have a TAJ> definite color at all until it was <use>d. (And then both rectangles TAJ> would be the same color again.) TAJ> Changing currentColor to inherit as itself and resolve to a real color TAJ> at used-value time would help the above, and wouldn't affect your TAJ> examples. Okay, I see the difference (and the point of the change in computed value). I think this would be a positive change in SVG2 (and could, potentially, be errat'ed in SVG 1.1SE; computed values were not listed there). It would be a change, and some of the tricksy tests in 1.1SE would now fail by this definition. But those tests mostly involve doing un-natural things with the inherit keyword, specifically for testing. They are easy enough to rewrite, to test this new definition. Implementations would break, wrt the test suite, for a while until they updated. I think this closes ACTION-3232 as well :) Ask Tab about the use of useColor keyword for the text-emphasis-color use case -- Chris Lilley Technical Director, Interaction Domain W3C Graphics Activity Lead, Fonts Activity Lead Co-Chair, W3C Hypertext CG Member, CSS, WebFonts, SVG Working Groups
Received on Tuesday, 7 February 2012 01:35:30 UTC